科研之友
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摘要
<正>在一块浮木上同时趴着三只乌龟。最大的乌龟不开心了,它认为其他两只乌龟是多余的。PartⅠIn a lake,on a log,sat some turtles-a great big turtle,a middle-sized turtle,and a teeny tiny turtle."There are two too many turtles on this log!"said the great big turtle unhappily."Get off!""Who,me?"asked the middle-sized turtle."Who,me?"asked the teeny tiny turtle.
